JPH0336309A - Concrete distributing method and device thereof in concrete cast by pump for concrete dam - Google Patents

Abstract

PURPOSE:To reduce the cost of equipment for constructing a dam by feeding concrete onto a belt conveyer slidable on a turn frame and sliding the belt conveyer while turning frame so as to distributively cast the concrete. CONSTITUTION:A turn frame 2 is provided through a turn bed seat 4 in the top part of a center post 1. Next, a wheel-provided sliding coneyer 3 is supported, movably in the lengthwise direction of the frame 2, onto a rail provided in the turn frame 2. Then a chute 9 is provided in one end of the conveyer 3. Further, a concrete pump C and a press-feed pipe P1 are provided, and a pipe end PE1 is connected to an input port of the conveyer 3. While the frame 2 is turned, the conveyer 3 is slided, and press-fed concrete is distributed and cast in a desired part. In this way, an equipment suitable for constructing a small scale dam can be relatively inexpensively formed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a concrete distribution method and apparatus for pumping concrete dams such as relatively small-scale dams, such as erosion control dams.

[Prior Art] Various methods are known for transporting concrete when constructing conventional dams. One of them is the so-called packet pouring method, in which a lifting machine with a transfer wire stretched over it is installed at the location where the dam is to be installed, and the packet filled with concrete is guided by the wire, and the concrete is placed in the specified location. is caused to fall. This method is suitable for relatively large dams, and concrete is poured step by block. However, if such a system is applied to a small-scale dam, an expensive lifting machine will be required, resulting in excessive equipment. On the other hand, a rotary pipe type distributor is also known for distributing concrete within blocks using a concrete pump, but this method also requires a relatively expensive distributor and limits the area in which concrete can be placed. I end up.

[Object of the invention] Therefore, the object of the present invention is to provide
Another object of the present invention is to provide a method for constructing a concrete dam in which the concrete pouring range can be arbitrarily set, and a concrete dam constructing device for directly carrying out the method.

[Structure of the Invention] According to the method of the present invention, concrete sent from a concrete pump can be slid freely onto a pivotable pedestal installed approximately at the center of a block to be poured into a concrete dam. The concrete is sent to a provided belt conveyor, the pedestal is rotated, the belt conveyor is slid, and the delivered concrete is distributed and poured at arbitrary positions within the block.

Further, according to the apparatus of the present invention, a swingable pedestal installed approximately at the center of the block where concrete is to be poured for a concrete dam, and a swiveling 1-norm slideably provided on the pedestal. , a slide conveyor slidably provided on the revolving frame, and the revolving 71
The concrete pump is provided with a support column erected on the top of the support column and a swivel-type pipe pedestal that supports a pressure pipe from a concrete pump provided at the top of the support column.

Preferably, the pivotable pedestal is attached to the center post via a joint.

Further, the swivel type pipe cradle is composed of an external fixing ring provided at the top of a support column erected on a revolving frame, and an internal rotating ring rotatably supported by the fixing ring via a bearing, Preferably, a chute facing the belt conveyor is suspended below the external fixing ring.

[Function] In the concrete distribution method and device for pumping concrete dams configured as described above, concrete sent from the concrete pump is fed into a belt conveyor on a revolving frame in a block via a pressure pipe. By rotating the pedestal and sliding the belt conveyor, concrete is poured continuously at a predetermined placement position without interrupting the pumping of the concrete.

In addition, each block of the concrete dam is constructed from the bottom in order, and when it reaches a certain height, the rotating frame and belt conveyor are separated by the joint of the center pole, and moved to another block for pouring.

In addition, the concrete sent from the concrete pump is put into the belt conveyor, but since it is supported by a swivel type pedestal, the concrete is continuously pumped without being restricted by the rotation of the swivel pedestal or the sliding of the belt conveyor. , distribution is easily done.

If the concrete dam placement height (lift height) is different, this can be handled by changing the height of the center post.

In addition, if the concrete dam is long, the rotating frame and belt conveyor can be made longer.

Furthermore, it can also be used for pouring outside the block (concrete at the fret part of a concrete dam).

[Example] The present invention will be described in detail below with reference to the drawings.

Figures 1 and 2 are a plan view and a partial side view showing the overall arrangement of equipment for carrying out the present invention. The concrete is transported by truck mixer T.
The concrete is put into a concrete pump C installed near the dam D, and the concrete pump C sends it to the pressure pipe Pl.

This pressure feed pipe Pl is connected from the longitudinal center of the casting block of the dam D to a swivel type pipe holder 11 (described later) of the distributor M.
It is piped to.

FIGS. 3 and 4 show a plan view and a front view of the distributor M, and the concrete sent by the pressure pipe Pl is sent to the slide conveyor 3 from its tip. The slide conveyor 3 is supported so as to be movable in the longitudinal directions Di and D2 of the revolving frame 2, and a chute 9 is provided at one end thereof. The rotating frame 2 is supported on a rotating base 4 fixed to the center post 1 by a joint 7 so as to be freely pivotable in both directions S1 and B2. Therefore, the slide conveyor 3 can place concrete at any position on the placing block b.

In FIG. 5, the rotating frame 2 has a pair of beams 2a.
, 2b are installed, and these beams 2a.

A scaffold 10.10 is provided on the outside of 2b, and two rollers R, , R2 are provided on the inside. These rollers R1 and R2 are in contact with a column RP erected above the center post 1. Furthermore, two turning rollers R9 and R4 are provided at the bottom of the beams 2a and 2b, respectively, and rails 5.5 for guiding four wheels 6 provided on the frame C0 of the belt conveyor C are provided at the top. has been installed. In addition, the symbol R3 in the figure,
R2 is a roller provided on the rotating base 4 to prevent the rotating frame 2 from floating up.

In FIGS. 6 and 7, columns P2 and P2 are erected on the scaffold 10.10 via joints F and F, and external fixing rings O are attached to the tops of these columns P2 and P2. It is fixed above 3.

A chute H is suspended from this external fixing ring O, and four bearings B, B,
2 is provided. And these bearings Bl,
In B2, an internal rotating ring I is rotatably supported.

A pressure feed pipe P1 is supported on the internal rotation ring I, and its tip is opposed to the chute H. Therefore, even when the rotating frame 2 is rotated, the pressure transfer pipe P1 rotates via the internal rotation ring I. Shoot H
It is now possible to pour concrete into the area.

When constructing the dam D, as shown in Fig. 8, concrete is pumped by a concrete pump C through a pressure feeding pipe P, and is fed into a distributor M from the end PEI, the revolving frame 2 is rotated, and the slide conveyor 3 is moved. Concrete is then placed within a predetermined plane of dam D, and the placed concrete is compacted using a vibrator or the like. When the pouring work from level L1 to level 2 is completed, the center post 1 is added and extended upward, the distributor M is installed upward, and the end PE of the pressure pipe P is moved upward to the position PE. move,
Concrete is poured up to level 3 in the same manner as above.

A scaffold B supporting the pressure feed pipe P is provided outside the dam D, and the scaffold B is sequentially extended upward according to the pouring work, the pressure feed pipe PM is added, and the end PE is moved to the position PE2.

[Effects of the Invention] Since the present invention is configured as explained above, it is possible to continuously place pressure-fed concrete using a relatively inexpensive conveyor and a turning table, and to achieve a relatively small-scale construction. It can be suitably implemented for construction of erosion control dams.

[Brief explanation of drawings]

1 and 2 are a plan view and a partial side view showing the overall layout when carrying out the present invention, FIGS. 3 and 4 are a plan view and a front view showing the distributor, and FIG. is a side sectional view showing the revolving frame, Fig. 6 is a side view showing the swivel type pipe pedestal, Fig. 7 is an enlarged view showing the main part of Fig. 6, and Fig. 8 is a side view explaining the mode of dam construction. It is a diagram. C...Concrete pump D...Concrete dam M...Distributor P,...Pressure pipe 1.
・Center post 2・Swivel frame 3・
...Slide conveyor 11...Swivel type pipe cradle Fig. 6 Pl Fig. 7 I

Claims (2)

[Claims] (1) Concrete sent from a concrete pump is sent to a belt conveyor that is slidably installed on a pivotable pedestal that is installed approximately in the center of the block where the concrete dam is to be constructed, and the pedestal is placed. 1. A method for distributing concrete in pump placement of a concrete dam, characterized in that concrete sent by rotating a conveyor belt and sliding a belt conveyor is distributed and placed at arbitrary positions within the block. (2) A pivotable pedestal installed approximately at the center of the block where concrete for the concrete dam is to be poured; a pivoting frame slidably mounted on the pedestal; and a pivoting frame slidably mounted on the pivoting frame. 1. A concrete dam, comprising: a belt conveyor; a support provided erected on the revolving frame; and a swivel pipe pedestal installed at the top of the support for supporting a pressure pipe from a concrete pump. concrete distribution equipment in pumping.